ATMEGA164A-MCH Atmel, ATMEGA164A-MCH Datasheet - Page 336
![IC MCU AVR 16K 20MHZ 44QFN](/photos/12/32/123212/44mc-qfn_sml.jpg)
ATMEGA164A-MCH
Manufacturer Part Number
ATMEGA164A-MCH
Description
IC MCU AVR 16K 20MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA164A-MCH
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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27.6
8272A–AVR–01/10
SPI Timing Characteristics
See
Table 27-15. SPI Timing Parameters
Note:
Figure 27-3. SPI Interface Timing Requirements (Master Mode)
164A/164PA/324A/324PA/644A/644PA/1284/1284P
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 27-3 on page 336
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
MISO
MOSI
SS high to tri-state
SCK
SCK
SCK to out high
SCK to SS high
SCK high/low
SS low to SCK
SS
Rise/Fall time
Rise/Fall time
SCK high/low
SS low to out
Description
CLCL
CLCL
SCK period
SCK period
Out to SCK
SCK to out
SCK to out
Setup
Setup
Hold
Hold
for f
for f
CK
CK
< 12 MHz
> 12 MHz
6
4
(1)
MSB
5
MSB
and
Figure 27-4 on page 337
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
7
...
4 • t
2 • t
...
Min
10
t
20
20
ck
ck
ck
for details.
See
50% duty cycle
2
0.5 • t
Table 17-5
Typ
3.6
10
10
15
10
10
15
10
LSB
1
sck
LSB
2
3
Max
1600
8
ns
336
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